6.
Let’s HIGGS BOSON
 In the Standard Model, the Higgs
particle is a boson, a type of particle that
allows multiple identical particles
to exist in the same place in the
same quantum state.
 It has no spin, electric charge.
 Is part of a Higgs mechanism that
gives mass to everything .
 Is the last missing piece of the
Standard Model for particle physics
 The Higgs particle creates a Higgs
field* that permeates space time.
 *Higgs field: Has the unusual property of a non-zero amplitude
in its ground state; i.e. a non-zero vacuum expectation value.

8.
Guyzz…Who iz Higgs?
Yes, this is Peter Higgs and he did propose the existence of the Higgs boson(at CERN).
“ D fatty one!! ”

9.
The men behind gauge symmetry breaking
Peter Higgs Francois Englert
Robert Brout
The Higgs particle is named after the British theorist Peter Higgs who along with Robert
Brout and François Englert theorized its existence in 1964.
HISTORY
The Higgs boson is often referred to as the "God particle" by individuals outside the
scientific community, from the title of a book on the Higgs boson and particle
physics by Nobel Physics prize winner Leon Lederman.

10.
WHY IS “HIGGS” .. SO IMPORTANT ???
 The Higgs is part of many theoretical equations
underpinning scientists' understanding of how the world
came into being.
 It opens the possibility to potential new discoveries
including a theory known as "super-symmetry"
 How certain particles acquire mass.
IF UNIVERSE IS ANSWER,
“HIGGS BOSON” WAS THE QUESTION!!!!

11.
PRODUCTION OF HIGGS BOSON
 A Higgs particle can be produced
much like other particles that are
studied, in a particle collider.
 This involves accelerating a large
number of particles to extremely high
energies and extremely close to
the speed of light, then allowing them
to smash together.
 Protons and lead ions (the bare
nuclei of lead atoms) are used at the
LHC(LARGE HADRON COLLIDER)

12.
The most common expected processes for Higgs boson
production are:
Gluon
fusion
Higgs
Strahlung
Top fusion
Vector boson
fusion

14.
Basic details about LHC
The Large Hadron Collider at CERN in Switzerland, Built in a 27 km tunnel under the
ground near Geneva
It was designed to collide two beams of protons, initially at energies of 3.5 TeV per beam
(7 TeV total),

15.
Part of the LHC, in its tunnel at CERN (European Center for Nuclear Research) near
Geneva, Switzerland, on May 31, 2007.

20.
Roomful of people = scattered particles with mass
Or The higgs field

21.
Famous person entering room = massive particle
Rush in closer to be near her

22.
Swarm of people = group of particles = mass
As d guests passes..surrounding guest gives him to momentum

23.
SO What’s the need of Higgs?
Fundamental symmetries of nature require that all the
elementary particles and force carriers are massless
in an “ideal” world all elementary particles would be
massless
but in the real world the elementary particles have widely
differing masses
so the symmetry must be broken
This is what the Higgs mechanism and electroweak
symmetry breaking is all about

24.
What is symmetry breaking?
Consider a smooth ball at the top
of a very smooth symmetric hill
The ball can roll in either direction
… there is a left-right symmetry
But the ball can only fall in one
direction
… the symmetry is broken